Certified Information Systems Security Professional (CISSP) — Question 46

If the wide area network (WAN) is supporting converged applications like Voice over Internet Protocol (VoIP), which of the following becomes even MORE essential to the assurance of the network?

Answer options

• A. Boundary routing
• B. Classless Inter-Domain Routing (CIDR)
• C. Internet Protocol (IP) routing lookups
• D. Deterministic routing

Correct answer: D

Explanation

Deterministic routing is crucial for maintaining consistent performance in converged applications like VoIP, as it ensures predictable paths for data packets, reducing latency and improving quality. The other options, while important for network functioning, do not directly address the specific needs for reliability and performance in voice communications.